NameCensus.

UK boy's name

Aleksei

A masculine Russian form of the name Alexander, meaning "defender of mankind".

For 2026, the newest official UK baby-name figures on this page are from 2021. That release is the current official benchmark rather than a forecast.

Aleksei is a boy's name in the UK records. People looking for Aleksei popularity in 2026 should use the latest official release, which is 2021 in this profile. In that release it ranked #3990, with 4 babies registered with the name. Its strongest year in the published records was 2009, with 5 births.

This profile covers 36 England and Wales registrations across 10 recorded years from 2006 to 2021. The figures come from ONS England and Wales, so the page is a view of published baby-name registrations rather than a forecast or a live count of people using the name today.

The latest count is about 80% of the recorded peak, which gives a quick read on how the name has moved since its high point.

We estimate that about 36 living people in the UK are called Aleksei. This uses published birth registrations from England and Wales, Scotland and Northern Ireland, then applies ONS national life tables to estimate how many are likely still alive. It does not forecast extra births for 2022 or 2026.

Key insights

  • Aleksei ranked #3990 for boys in England and Wales in 2021, with 4 registrations.
  • The name peaked in 2009, when 5 boys were registered as Aleksei.
  • About 36 living people in the UK are estimated to have Aleksei as a first name, after adjusting past birth registrations with ONS life tables.

Latest rank (E&W)

#3990

2021

Births in 2021

4

Latest year

Peak year

2009

5 births

Estimated living

36

2026

Meaning

What does Aleksei mean?

The name Aleksei is a masculine given name of Russian origin, derived from the Greek name Alexios, which means "defender" or "helper." This name has its roots in ancient Greek culture, where it was a common name given to boys.

In the Russian Orthodox tradition, Aleksei is a popular name associated with the 14th-century Saint Aleksei, the Metropolitan of Moscow, who is revered for his piety and contributions to the Russian Orthodox Church. The name gained widespread popularity in Russia and other Slavic countries.

One of the earliest recorded instances of the name Aleksei can be found in the Primary Chronicle, an ancient Russian manuscript dating back to the 12th century. This chronicle mentions Prince Aleksei Svyatoslavich, who ruled the city of Novgorod in the late 11th century.

Throughout history, several notable figures have borne the name Aleksei. Among them is Aleksei Mikhailovich Romanov (1629-1676), the Tsar of Russia from 1645 to 1676, known for strengthening the Russian state and expanding its territories. Another prominent figure is Aleksei Nikolayevich Tolstoy (1883-1945), a renowned Russian writer and novelist best known for his science fiction works.

The name Aleksei has also been associated with Russian royalty. Aleksei Nikolaevich (1904-1918) was the son of Tsar Nicholas II and the heir apparent to the Russian throne before the Bolshevik Revolution in 1917. His tragic fate, along with that of his family, has become a part of Russian history.

In the world of science, Aleksei Krylov (1863-1945) was a prominent Russian naval engineer and mathematician who made significant contributions to the theory of ship motions and vibrations. Aleksei Leonov (1934-2019) was a Soviet/Russian cosmonaut who became the first human to conduct a spacewalk in 1965.

The name Aleksei has also had its place in the arts. Aleksei Batalov (1928-2022) was a celebrated Russian actor known for his roles in classic Soviet films, while Aleksei Arbuzov (1908-1986) was a renowned Russian playwright and screenwriter.

Sourced from namecensus.com.

Popularity

Aleksei over time

The chart below shows babies named Aleksei registered in England and Wales in the years where the name appears in the published records, from 2006 to 2021. Empty years are left out so rare names are not stretched across long periods where the published files do not show any registrations.

For Aleksei, the clearest high point is 2009. The latest England and Wales figure is 4 births in 2021, compared with 5 at the peak.

Babies born per year

Aleksei
01345200620132021

Decades

Aleksei by decade

Decade totals smooth out the yearly jumps and make it easier to see whether Aleksei was a short-lived spike or a name that stayed in regular use. Average rank is calculated only from years where a published rank exists.

Decade Average rank Total births Years covered
2020s #3990 4 1
2010s #4566 16 5
2000s #3658 16 4

Related

Names similar to Aleksei

FAQ

Aleksei: questions and answers

How popular is the name Aleksei in the UK right now?

In 2021, Aleksei was ranked #3990 for boys in England and Wales, with 4 births registered.

When was Aleksei most popular?

The peak year on record was 2009, with 5 babies registered as Aleksei in England and Wales.

What is the meaning and origin of Aleksei?

A masculine Russian form of the name Alexander, meaning "defender of mankind".

How many people are called Aleksei in the UK?

A total of 36 babies have been registered as Aleksei across the 10 years of ONS England & Wales records shown here.

Which records is this page based on?

The England and Wales timeline uses ONS baby-name records. Scotland figures come from NRS and Northern Ireland figures come from NISRA. Counts are registrations in published baby-name files. The living estimate uses those birth registrations with ONS national life tables.